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A kind of modified graphene and its preparation method

A technology of graphene and multi-layer graphene, applied in the field of nanometers, can solve the problems of damage to graphene molecules, difficulties, graphene easy to agglomerate and disperse, etc., to overcome the serious reduction of aspect ratio, good cleaning effect, and bonding firmness Good results

Active Publication Date: 2018-11-30
SOUTHWEST JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the easy agglomeration and difficulty in dispersion of graphene in the prior art, and the deficiency of damaging graphene molecules in existing modification methods, to provide a modified modified graphene product, and to prepare the graphene Surface modification method

Method used

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  • A kind of modified graphene and its preparation method
  • A kind of modified graphene and its preparation method
  • A kind of modified graphene and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Spread a small amount of multilayer graphene evenly on the bottom of a clean beaker, place the graphene beaker in the plasma processing chamber, set the power to 60W, process time to 10min, and process gas as Ar.

Embodiment 2

[0051] Sprinkle a small amount of multilayer graphene evenly on the bottom of a clean beaker, place the graphene beaker in the plasma processing chamber, set the power to 60W, first pass in Ar for 5 minutes, and then pass in O 2 The processing time is 5 minutes, and the total processing time is 10 minutes.

Embodiment 3

[0053] Spread a small amount of multilayer graphene evenly on the bottom of a clean beaker, place the graphene beaker in the plasma processing chamber, set the power to 60W, first pass in Ar for 5 minutes, and then pass in NH 3 The processing time is 5 minutes, and the total processing time is 10 minutes.

[0054] figure 1 are the infrared spectrum curves of graphene without any treatment and graphene treated with plasma of different treatment gases. In the figure, spectral line 1 is the original graphene characteristic curve, spectral line 2 is the graphene characteristic curve after argon plasma treatment, spectral line 3 is the graphene characteristic curve after argon and oxygen mixed plasma treatment, spectral line 4 is the graphene characterization curve after argon and ammonia mixed plasma treatment. Comparing the four curves, it can be seen that the intensity of the peaks representing the hydroxyl and carboxyl groups in the infrared curve of the plasma-treated graphe...

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Abstract

The invention discloses a modified graphene product, which is obtained by modifying graphene with rutin. The invention also discloses a method for modifying the surface of graphene. The modification method is to add the graphene treated by plasma into the aqueous solution of rutin, disperse evenly, let it stand, filter, take the filter residue and carry out vacuum drying to obtain modified graphene. The modified graphene of the invention has good dispersibility and low impurity content. At the same time, the method of the invention does not cause chemical damage to the graphene, maintains the integrity of the graphene, does not produce waste water, waste acid and other pollutants, has a simple process, easy control of process parameters, and has broad application prospects.

Description

technical field [0001] The invention belongs to the field of nanotechnology, in particular to a method for modifying the surface of graphene. Background technique [0002] The ideal structure of graphene (CNFs) is a planar hexagonal lattice, which can be regarded as a molecular layer peeled off from three-dimensional graphite, and each carbon atom is sp 2 Hybridization, in the direction perpendicular to the plane, contribute electrons on the remaining one p orbital to form a large π bond, π electrons can move freely, endowing graphene with good conductivity; in graphene, each carbon atom passes through a strong The σ bond (the strongest chemical bond in nature) is connected to the other 3 carbon atoms. These strong carbon-carbon bonds make the graphene sheet have excellent mechanical properties and structural rigidity, and its Young's modulus is about 1TPa , the strength is about 130 ~ 180GPa. Due to the above-mentioned excellent properties of graphene, it can be used in t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B32/194
CPCC01P2002/85C01P2004/03C01P2006/90
Inventor 蒋小松刘晚霞宋庭丰李峰邵甄胰朱德贵朱旻昊
Owner SOUTHWEST JIAOTONG UNIV
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